17 december 2019
Introduction
NACE codes
Classify economic activities: NACE
"Nomenclature statistique des Activités économiques dans la Communauté Européenne"
The NACE is a hierarchical classification and contains four-digit codes
NACE codes
General Business Register (GBR)
47.2.4 - Retail sale of bread, cakes, flour confectionery
96.0.2 - Hairdressing
NACE codes
- Incorrect code appointed during registration
- Structure of an enterprise changes over time
- Changes in the activity of an interprise
NACE codes
Manual checks are costly and time-consuming…
Previous research
Current research
So we decided to turn things around…
Current research
Current research
Current research
Current research
- Predicted label
- Observed label
- Agreement
- Probability of an error based on enterprise characteristics
Testing the method: experiments
- Percentage of errors
- Subtle / obvious errors
- Size of the labeled set
- Relating enterprise characteristics to probability of an error